Primary Market is overriding product prices

[Guyfogel]

Since last week, my product prices have been overridden. I'm not sure if I did anything wrong, I don't remember touching markets. We are still on Pause and Build, setting up our rather large catalogue with variants and bundles, (near-manual migration from shopware 6).
I can't reset prices in the market menu (option is greyed out in most of them), I can't find any option to remove the market and start over. I checked previous discussions and no one has my exact problem, some of the screenshots look like they have options that I don't.
Ideally, I'd like some automatic way to remove the price override for good because I'd rather not touch prices outside of the product page, and my boss wouldn't either. 
What can I do?
I also need advice - when that is fixed, should I enter the net prices on the product page and mark "charge tax"? Is there an option to enter net and brutto prices?